发明名称 |
Porous membrane of vinylidene fluoride resin and process for producing the same |
摘要 |
There is provided a porous membrane of vinylidene fluoride resin which has pores of appropriate size and distribution and also excellent mechanical strength represented by tensile strength and elongation at break and is useful as a microfiltration membrane or a separator for batteries. The porous membrane of vinylidene fluoride resin is characterized by the presence in mixture of a crystalline oriented portion and a crystalline non-oriented portion as confirmed by X-ray diffraction, and is produced by subjecting a melt-extruded composition obtained by mixing a vinylidene fluoride resin having a molecular weight distribution which is appropriately broad and high as a whole with a plasticizer and a good solvent for vinylidene fluoride resin, to cooling for solidification from one surface, extraction of the plasticizer and stretching.
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申请公布号 |
US2006178480(A1) |
申请公布日期 |
2006.08.10 |
申请号 |
US20050548826 |
申请日期 |
2005.09.13 |
申请人 |
TADA YASUHIRO;TAKAHASHI TAKEO;MIZUNO TOSHIYA |
发明人 |
TADA YASUHIRO;TAKAHASHI TAKEO;MIZUNO TOSHIYA |
分类号 |
C08L27/12;B01D67/00;B01D69/02;B01D71/34;B29C69/00;C08F14/22;D01F6/48 |
主分类号 |
C08L27/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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